SPECIES AND BREEDS. 143 
in which he can exercise a certain influence ; but 
the variations thus produced are of a peculiar 
kind, and do not correspond to the differences 
of the wild Species. Let us take some examples 
to illustrate this assertion. 
Every Species of wiid Bull differs from the 
others in its size; but all the individuals corre- 
spond to the average standard of size characteris- 
tic of their respective Species, and show none of 
those extreme differences of size so remarkable 
among our domestic Cattle. Every Species of wild 
Bull has its peculiar color, and all the individuals 
of one Species share in it: not so with our do- 
mesticated Cattle, among which every individual 
may differ in color from every other. All the in- 
dividuals of the same Species of wild Bull agree 
in the proportion of their parts, in the mode of 
growth of the hair, in its quality, whether fine or 
soft: not so with our domesticated Cattle, among 
which we find in the same Species overgrown 
and dwarfish individuals, those with long and 
short legs, with slender and stout build of the 
body, with horns or without, as well as the great- 
est variety in the mode of twisting the horns, — 
in short, the widest extremes of devclopment 
which the degree of pliability in that Species 
will allow. 
A curious instance cf the power of man, not 
only in developing the pliability of an animal’s 
